The Power of Apple Cider Vinegar for Rust Removal

I have done the washing soda and a battery charger and that works real good for large parts, never tried the apple cider vinegar, apple cider vinegar has a pH of about 6 pH. White vinegar has a 3 pH so it might work faster and better. I will definitely give it a try on rust. I have filled a radiator that was full on calcium and other junk plugging it up with a gal of white vinegar and let it sit for about 3hrs and cleaned it out with a garden hose and It looked like new inside.